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Mention how you will connect the ammeter and the voltmeter
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1
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2560
|
April 4, 2019
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Derive the expression for the heat produced due to a current T flowing for a time interval
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1
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3721
|
April 4, 2019
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(a) Define the term ‘Coulomb’
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1
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7478
|
April 4, 2019
|
|
(a) Define the term Volt’
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1
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12956
|
April 4, 2019
|
|
Two resistors with resistances 5Ω and 15Ω are to be connected to a battery of emf 9V so as to obtain: (i) minimum current
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1
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3835
|
April 4, 2019
|
|
(a) Distinguish between the terms “overloading and short circuiting” as used in domestic circuits
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1
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1599
|
April 4, 2019
|
|
Two lamps, one related 60w at 220w at 220V and the other 40w at 220V
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1
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610
|
April 4, 2019
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(a) State Ohm’s Law
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1
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4267
|
April 4, 2019
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(i) Draw X schematic diagram of a circuit consisting of a battery of five 2V cells
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1
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1210
|
April 4, 2019
|
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If a 12V'battery is connected to the arrangement of resistances given below; calculate: (i) the total effective resistance of the arrangement
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1
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13841
|
April 4, 2019
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A torch bulb is rated 2.5V and 750mA. Calculate (i) its power
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1
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4705
|
April 4, 2019
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Two coils A and B of insulated wires are kept close to each other
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1
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2447
|
April 4, 2019
|
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Calculate the resistance of an electric bulb which allows a 10A current when connected to a 220V power source
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1
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8263
|
April 4, 2019
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What is an electric circuit? Distinguish between an open and a closed circuit
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1
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9300
|
April 4, 2019
|
|
Calculate the electric energy consumed by a 1200W toaster in 20 minutes
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1
|
11200
|
April 4, 2019
|
|
A piece of wire of resistance 20Ω is drawn out so that, its length is increased to twice its original length
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1
|
1802
|
April 4, 2019
|
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A wire is 1.0m long 0.2mm in diameter and has a resistance of 10Ω. Calculate the resistivity of its material
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1
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55658
|
April 4, 2019
|
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Calculate the area of cross section of a wire, if its length is 1.0m, its resistance is 23Ω
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1
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17135
|
April 4, 2019
|
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An electric heater is used on 220V supply and takes a current of 3.4A. Calculate (i) its power
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1
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1306
|
April 4, 2019
|
|
An electric lamp is marked 100W, 220V. It is used for 5 hours daily. Calculate. (i) its resistance while glowing
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1
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29682
|
April 4, 2019
|
|
An electric iron has a rating of 750W, 220V. Calculate. (i) Current passing through it
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1
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36004
|
April 4, 2019
|
|
Draw a schematic diagram of an electric circuit consisting of a battery of two cells each of 1.5V, 5Ω, 10Ω and 15Ω
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1
|
8468
|
April 4, 2019
|
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Out of 60w and 40w lamps, which one has a higher electrical resistance when in use?
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1
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3307
|
April 4, 2019
|
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Why is the series arrangement not used for connecting domestic electric appliances in a circuit?
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1
|
1177
|
April 4, 2019
|
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A wire of resistance 10 ohm is bent in the form of a closed circle
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1
|
4711
|
April 4, 2019
|
|
Figure shows two electrical circuits
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0
|
3370
|
March 17, 2018
|
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Find out the following in the electric circuit given in figure alongside: Effective resistance of two 8Ω resistors in the combination Current flowing through 4Ω. resistor
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0
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3813
|
March 17, 2018
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Name an instrument that measures electric current in a circuit
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0
|
4065
|
March 17, 2018
|
|
The potential difference between two points in an electric circuit is 1 volt
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|
0
|
892
|
March 17, 2018
|
|
Resistivity of copper is lower than that of aluminium which, in turn, is lower than that of constantan. Six wires labelled as A, B, C, D, E, F have been designed as per the following parameters:
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0
|
15051
|
March 17, 2018
|